Singer Model 319 Question

I am considering a Singer 319 and have a question, please. Is this one of the zig zag models that needs to have a cam in place before it will sew? I seem to remember one model which must have a cam in or it won't even straight stitch. Any help is greatly appreciated!

Thank you, Candace! I have a box of cams I picked up for $2 about 6 months ago, now they'll have a machine. Yay! I love the looks of this machine, she's very clean and in a nice cabinet and only $35. Think I better go rescue her. Thanks again!